Caleb only has metric wrenches and needs a 8 inch wrench, how could he use the chart to choose the best fit? Caleb should use the 5 millimeter wrench because that would be closest to 18 inches since they both have 5.

Caleb should wide 5 by 15 to get a decimal of 0.3125. Then he should try the 7 millimeter and 8 millimeter wrenches

because 02751 <03125 <0.3144

Caleb should divide 15 by 5 to get a decimal of 32. Then he should try the 8 millimeter and 9 millimeter wrenches

because 314 32 <0.3537

Caie should use a 20 millimeter wrench because 4 millimeters *

So 4 millimeters x 5 - 20 millimeters ~

-x5-